Table X-P
External Similitude Centers.
Points available at the Kimberling's Encyclopedia ETC.
The ETC version: The 8998 points version of 2015.
The "Discoverer" database version: October 2013.
Last update: 2016-04-18

      Kimberling Notation     Role  
  1     X(1) Incenter     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Inner Johnson-Yff Circle  
  2     X(2) Centroid     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Antimedial Circle  
  3     X(3) Circumcenter     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Nine-Point Circle  
  4     X(3) Circumcenter     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Tangential Circle  
  5     X(3) Circumcenter     External Center of Similitude of the Incircle of the Johnson Triangle and the Spieker Circle  
  6     X(3) Circumcenter     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Tangential Circle  
  7     X(3) Circumcenter     External Center of Similitude of the Inner Johnson-Yff Circle of the Johnson Triangle and the Spieker Circle  
  8     X(3) Circumcenter     External Center of Similitude of the Outer Johnson-Yff Circle of the Johnson Triangle and the Spieker Circle  
  9     X(4) Orthocenter     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Circumcircle  
  10     X(4) Orthocenter     External Center of Similitude of the Tangential Circle of the Johnson Triangle and the Circumcircle  
  11     X(4) Orthocenter     External Center of Similitude of the Tangential Circle of the Johnson Triangle and the Nine-Point Circle  
  12     X(4) Orthocenter     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Incircle  
  13     X(4) Orthocenter     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Inner Johnson-Yff Circle  
  14     X(4) Orthocenter     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Outer Johnson-Yff Circle  
  15     X(11) Feuerbach Point     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Incircle  
  16     X(56) External Center of Similitude of Circumcircle and Incircle     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Inner Johnson-Yff Circle  
  17     X(114) Complement of the X(98) Tarry Point     External Center of Similitude of the Moses Circle of the Johnson Triangle and the Nine-Point Circle  
  18     X(119)     External Center of Similitude of the Incircle of the Johnson Triangle and the Nine-Point Circle  
  19     X(355) Center of the Fuhrmann Circle     External Center of Similitude of the Inner Johnson-Yff Circle of the Johnson Triangle and the Circumcircle  
  20     X(381) Center of the Orthocentroidal Circle     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Nine-Point Circle  
  21     X(486) Inner Vecten Point     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Cosine Circle  
  22     X(999)     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Incircle  
  23     X(1329)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Spieker Circle  
  24     X(1347)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Orthocentroidal Circle  
  25     X(1349)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Brocard Circle  
  26     X(1352)     External Center of Similitude of the Moses Circle of the Johnson Triangle and the Antimedial Circle  
  27     X(1479) Center of the Outer Johnson-Yff Circle     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Incircle  
  28     X(1677)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Lemoine Circle  
  29     X(1699)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Excentral Circle  
  30     X(2010)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Gallatly Circle  
  31     X(2051)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Apollonius Circle  
  32     X(2567)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Second Brocard Circle  
  33     X(2937)     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Tangential Circle  
  34     X(3071)     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Cosine Circle  
  35     X(3312)     External Center of Similitude of the Antimedial Circle of the Johnson Triangle and the Cosine Circle  
  36     X(3374) Inner Regular Octagon Point     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Kenmotu Circle  
  37     X(3583)     External Center of Similitude of the Circumcircle of the Johnson Triangle and the Outer Johnson-Yff Circle  
  38     X(5592)     External Center of Similitude of the Nine-Point Circle of the Johnson Triangle and the Outer Johnson-Yff Circle  
  39     X(6288)     External Center of Similitude of the Sine-Triple-Angle Circle of the Johnson Triangle and the Nine-Point Circle  
  40     X(6290)     External Center of Similitude of the Cosine Circle of the Johnson Triangle and the Nine-Point Circle  
  41     X(7681)     External Center of Similitude of the Spieker Circle of the Johnson Triangle and the Nine-Point Circle